VPP: Fix Coverity alert on unitialized vpp_kernels 32/33632/1 accepted/tizen_3.0_common accepted/tizen_3.0_ivi accepted/tizen_common accepted/tizen_ivi accepted/tizen_mobile accepted/tizen_tv accepted/tizen_unified accepted/tizen_wearable sandbox/pcoval/tizen tizen tizen_3.0 tizen_3.0.2014.q4_common tizen_3.0.2015.q1_common tizen_3.0.2015.q2_common tizen_3.0.m1_mobile tizen_3.0.m1_tv tizen_3.0.m2 tizen_3.0_ivi accepted/tizen/3.0/common/20161114.111056 accepted/tizen/3.0/ivi/20161011.050710 accepted/tizen/common/20150114.103703 accepted/tizen/ivi/20150115.062939 accepted/tizen/ivi/20160218.025243 accepted/tizen/mobile/20150114.121030 accepted/tizen/tv/20150114.113317 accepted/tizen/unified/20170309.040129 accepted/tizen/wearable/20150114.124658 submit/tizen/20150114.092400 submit/tizen_3.0.m2/20170104.093753 submit/tizen_3.0_common/20161104.104000 submit/tizen_3.0_ivi/20161010.000004 submit/tizen_ivi/20160217.000000 submit/tizen_ivi/20160217.000006 submit/tizen_unified/20170308.100414 tizen_3.0.m1_mobile_release tizen_3.0.m1_tv_release tizen_3.0.m2.a1_mobile_release tizen_3.0.m2.a1_tv_release tizen_3.0_ivi_release tizen_4.0.m1_release